13181440587 has 16 divisors (see below), whose sum is σ = 20628870912. Its totient is φ = 7328676960.

The previous prime is 13181440583. The next prime is 13181440619. The reversal of 13181440587 is 78504418131.

It is not a de Polignac number, because 13181440587 - 2² = 13181440583 is a prime.

It is a super-2 number, since 2×13181440587² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13181440583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8481489 + ... + 8483042.

It is an arithmetic number, because the mean of its divisors is an integer number (1289304432).

Almost surely, 2^13181440587 is an apocalyptic number.

13181440587 is a deficient number, since it is larger than the sum of its proper divisors (7447430325).

13181440587 is a wasteful number, since it uses less digits than its factorization.

13181440587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16964578.

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 13181440587 in words is "thirteen billion, one hundred eighty-one million, four hundred forty thousand, five hundred eighty-seven".